2-Cyano-5-fluoro-6-nitro-3-(trifluoromethoxy)pyridine
5-Chloro-4-iodo-3-(trifluoromethoxy)pyridine-2-sulfonamide
2-Cyano-5-fluoro-4-nitro-3-(trifluoromethoxy)pyridine
3-Chloro-4-iodo-2-(trifluoromethoxy)pyridine-5-sulfonamide
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